These are the listings closest to Emergency Tab in what they say they do. Comparable, not endorsed: the ranking is the catalog's, and the judgement is yours.
Replacing
Emergency Tab
Category
Productivity · Tools
Its audience
3 users
Comparable listings
8
Comparable listings
TabGuardDescribes nearly the same job, smaller audience · Wider access than the original6 usersCompare side by side
Anti-TabDescribes nearly the same job, smaller audience · Wider access than the original10 users★ 5.0Compare side by side
FocalizeDescribes nearly the same job, smaller audience · Wider access than the original5 usersCompare side by side
Lock TabDescribes nearly the same job, smaller audience · Wider access than the original5 usersCompare side by side
zenTabDescribes nearly the same job, smaller audience · Same access as the original3 usersCompare side by side
OnTaskDescribes nearly the same job, smaller audience · Wider access than the original10 users★ 5.0Compare side by side
FocusTabDescribes nearly the same job, smaller audience · Wider access than the original10 users★ 5.0Compare side by side
Comparable listings are pre-computed from the meaning of each store listing, then shown with the audience and rating from our latest pass over the store. Access compares where each listing can run (every site, how many site patterns) and how many browser permissions it declares, against the extension it would replace. Narrower is not a verdict on safety: compare what each needs for the job.